Fuse for aviation-bombs



E. SCHNEIDER.

FUSE FOR AVIATION BONIBS.

APPLICATION FILED JUNE I6, 1919. y 1,352,542, Patented sept. 14,1920.

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EUGNE SCHNEIDER, or PARIS, FRANCE, assisnoa To scrnvninnn 4a, ein., or Panis,

FRANCE, .A LIMITED EINHSTOCI-- COMPANY 0F FPANCE.

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Application filed June 116,

To all whom t may conferir Be it known that I, A.UGNE lSoriwnmnn, a citizen of the Republic of France, residing at 42 rue dAnjou, Faris, France, have invented a new and useful Improved Fuse for Aviation-Bombs, which invention fully set i'orth in the followingl rspecification. Y

rIhis invention has for its object toy provide an improved fuse for aviation bombs.

A constructional example fof the improved fuse is illustrated in the accompanying drawings wherein .the iigures show the improved fuse mounted in the vbase cfa bomb.

Figure l is a longitudinal section along the axisof the fuse, showing the latter in the rest position.

' Figs. Zand 3 are cross sections respectively on the lines IIL- II and'HI-III of Fig. l. j

Fig. 4 is a longitudinal sectionA showing the fuse cocked. Y

The tubular body of an element A adapted to be fixed to the bomb B and iitted with a percussion cap carrier C mounted in the center of a partition a. l

The detonator D is screwedV on the lower end of the said element A.

The percussion cap carrier C is formed with an axial passage c and a branch passage c1 opening into the said passage. ln

assembling the fuse, a ball E may be ar-k ranged as shown in full lines in Fig. l, in such a manner as to be clamped between a seat formed on the lower end of the passage'c and a seat formed on the upper end of an axial passage f provided in a retarder F that is situated inside the detonator and engaged in the lower chamber a1 of the element A. A retarding composition f1 is placed in an eccentric recess in the retarder F. The fuse may be set so as to operate without delay, in which case the ball will occupy an yeccentric position such as that indicated in dot and dash lines at El (Fig. 1).

The upper chamber a2 of the element A 'forms a lodgment for the striker pellet G which bears with a shoulder upon a spring g kept in tension by a set screw g1; this screw serves also for connecting the element A to the element H of the usebody. rJlhis tubular element H is screwed upon the eleisY the fuse comprises Specification of Letters Patent. aghtgd Sqgpt, j, 92() 191e. semina seas-5s.

bolt L which'is movable in a chamber G1 j in the pellet G.' The head of the bolt projects through the pellet and is held in a recessa3 in the fuse body A, by compressing a spring Z whichv has a constant tendency to push'said bolt into the chamber G1.

The bomber takes out the pin VJ before throwing the bomb. Y

During the fall of the bomb the resistance, of the air causes the screw-propeller to revolve. During the unscrewing motion-ot the:` screw propeller and up to the instant whenthe tail K-c has become entirely disengaged rom the bolt L, the pellet 'G is ininobilized bythe said bolt L.' 'When this disengagement'has been completely effected, the bolt L is pushed bythe spring Z into the chamber G1. The fuse is then cocked (Fig. 4). The screw propeller I is ejected from the fuse, being guided'in the tube H, up to the moment when it leaves the bomb, by a late or cross member M xed on the tail c Y On the bomb encountering an obstacle, the pellet G continues its movement by inertia andthe lstriker' strikes the percussion cap N, the fiash oiwhich is transmitted to the detonator either with delay, or without delay, according tothe position which the ball E is given in setting the fuse.

What I claim is Y 1. A fuse for aviation bombs comprising a rtubular body, a detonator secured to the lower part of the tubular body,al retarder in the detonator projecting into the lower end of the tubular body,said retarder having an axial bore and an eccentric recess to contain a retarding tiring composition, a cap-carrier mounted in the tubularbody' above theretarder in spaced relation thereto, said cap-carrier having an axial bore alined with the axial bore Vof the retarder to form a direct conduit from the cap to the detonator, said cap-carrier also having a branch bore leading from the cap to the space between the cap-carrier and the detonator to form a passage from the cap to the eccentric recess in therretarder containing the retarding firing composition, a` ball normally interposed between the -alined bores of the retarder and cap-carrier to close the direct conduit therethrough, said ball being displaceable to open said conduit, a striker pellet slidable in the tubular body to impinge on the capV carried by the cap-carrier, a spring normally pressing the striker pellet away from the cap-carrier, a bolt movable inthe striker pellet to engage the tubular body to hold the pellet against movement in said body, a spring normally pressing the bolt into position of disengagement with the tubular body, and a screw-propeller having a hub screw-threaded into the upper end of the tubular body and provided with a tail normally engaging' the bolt to hold the latter in engagement with the tubular body, said propeller rotating through the falling of the bomb to unscrew its hub and to withdraw the tail from the bolt, the free bolt responding to the action of its spring to release the striker pellet so that the latter can impinge on the cap when thebomb strikes an obstacle.

2. A fuse for avia-tion bombs comprising a tubular body, a cap-carrier mounted in the lower partof the tubular body, a striker pellet slidable in the tubular body to impinge on theV cap carried by thecap-carrier when the falling bomb strikesan obstacle, a spring normally pressing the stri-ker pellet `away from the cap-carrier, a Vpin projecting inwardly from the wall of the tubular body to limit the movement oi'f the striker pellet away from the cap-carrier, a bolt movable in the striker pellet to engage a recess in vthe tubular body to hold the striker pellet Vtail on the propeller hub extending into'the striker pellet to engage the bolt to hold the latter against the action of its spring in engagement with the tubular body, said tail being withdrawn from the bolt as the hub is unscrewed by the rotation of the propeller, the freed bolt responding to vthe action of its spring to freethe vstriker pellet so that the latter will be. cocked to impinge on the cap when the falling bomb strikes an obstacle, a guide on the tail to guide the same as it leaves the tubular body, and a safety pin extending through the tubular body and the hub of the propeller to be removed preliminary to the dropping of the bomb.

l n testimony whereof Ihave signed this specification. l

EUGENE SCHNEIDER.

`Witnessesz Y ANDR Mosrlonnn, CHAS. P. PREssLY. 

